The only thing I'm saying is that measuring once maximises the luck component. Sure, measure other things by proxy as well. But to borrow your phrase, understanding and taking into account the variability of real life behaviours, sampling noise and environment biases shows "not only intelligence, but also for suitability to certain jobs."

> maximises the luck component

No, it doesn't. Repeating it ad infinitum does that.

But therefore it's a good thing grades aren't just pass or fail, but have a range, from 1 to 10, or to 20 or whatever. Too bad there's so much external pressure on the system.